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Finding the Fourth Proportional to 45,499.68, 68,249.68 and 13,909.62

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Solution

The fourth proportional to 45,499.68, 68,249.68 and 13,909.62 is: 20,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,499.68 : 68,249.68 = 13,909.62 : x
  2. Step 2: Convert to fraction form
    45,499.68/68,249.68 = 13,909.62/x
  3. Step 3: Cross multiply
    45,499.68x = 68,249.68 × 13,909.62
  4. Step 4: Simplify right side
    45,499.68x = 949,327,113.92
  5. Step 5: Solve for x
    x = 949,327,113.92/45,499.68
  6. Step 6: Final answer
    x = 20,864.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.